Hello!
I just had one question about setting the paremeters of a pound:
I am creating a model of a urban network including reservoirs. When I make the simulation the pond's volume and the elevation computed (as result) don't correspond to the elevation area/volume curve setted before. First I thought it was an error of setting paramters but then I looked in the quick start lessons examples and there were the same problems. The elevation area/volume curve is only respected in the simulations when setting the elevation of the pond at a zero elevation.
the invert value of a pound is setted by the lowest elevation of the pound elevation area/volume curve? there is an available "invert parameter" located in the flex table but it doesn't seem to be taken into account.
Another question, I'm using the 05.03.2008 [08.09.26.17] is there any patches or update for it and where can I get them?
Thank you for the help!
regards
Hello Leonard,
I am a bit unclear on your questions, but I will talk about a few things that I think might be relevant.
First, there have been three major new releases of CivilStorm since version 08.09.26.17. The latest one is 08.11.02.62, and is available for download on our website, if your company has a SELECT subscription. I would strongly recommend the upgrade; in addition to improvements with the calculation engine, new features have been added, which you may find useful.
Second, when you refer to an "invert parameter", I assume you're talking about the "Initial Elevation Type". This field allows you to choose the starting water surface elevation in the pond. By default, this is set to "invert", meaning that the pond is dry at the start of the simulation.
As for your main question - could you clarify whether you're using an elevation-area curve or an elevation-volume curve to define your pond geometry? If you're using the Elevation-Area method, it's important to note that the program uses a special Conic method to convert to an elevation-volume curve. Unfortunately the CivilStorm documentation doesn't go into detail on this method, but here's an excerpt from the documentation for our PondPack product, which uses the same method:
If you're using the Elevation-Volume method, are you saying that you're looking at the computed hydraulic grades during the simulation and checking the corresponding computed Volume result? In my testing (in the latest version) I do not see a problem with this. For example I change the included Example-1.csd file to have an elevation-volume curve for the pond, and the the volumes seem to match the hydraulic grades.
If you have any further questions, I would encourage you to contact technical support.
Regards,
Jesse DringoliTechnical Support Manager, OpenFlowsBentley Communities Site AdministratorBentley Systems, Inc.